<?php

/**
 * Field handler that turns an item's title into a clickable link to the original
 * source article.
 */
class views_handler_field_aggregator_title_link extends views_handler_field {

    function construct() {
        parent::construct();
        $this->additional_fields['link'] = 'link';
    }

    function option_definition() {
        $options = parent::option_definition();

        $options['display_as_link'] = array('default' => TRUE);

        return $options;
    }

    /**
     * Provide link to the page being visited.
     */
    function options_form(&$form, &$form_state) {
        parent::options_form($form, $form_state);
        $form['display_as_link'] = array(
            '#title' => t('Display as link'),
            '#type' => 'checkbox',
            '#default_value' => !empty($this->options['display_as_link']),
        );
    }

    function render($values) {
        $value = $values->{$this->field_alias};
        $link = $values->{$this->table_alias . '_link'};
        if (!empty($this->options['display_as_link'])) {
            return l(check_plain($value), $link, array('html' => TRUE));
        } else {
            return check_plain($value);
        }
    }

}
